{"id":913,"date":"2021-06-01T10:59:32","date_gmt":"2021-06-01T02:59:32","guid":{"rendered":"http:\/\/201230ip92c2.adwebcloud.com\/?post_type=product&p=913"},"modified":"2023-08-07T17:13:00","modified_gmt":"2023-08-07T09:13:00","slug":"wedge-flow-meter","status":"publish","type":"product","link":"https:\/\/www.hginstrument.com\/pt\/flow-instrument\/wedge-flow-meter\/","title":{"rendered":"Sensor de caudal em cunha"},"content":{"rendered":"
Princ\u00edpio:<\/strong><\/h5>\n

According to Bernoulli’s formula, the flowing fluid obeys the law of conservation of energy, that is the sum of the kinetic energy and the static energy is constant. When the fluid is passing the “V” shape block, the flow area reduces, the flow velocity increases, the static pressure reduces, which produce the static pressure difference, the pressure difference’s square root is in direct proportion with the flow rate, so measure the differential pressure can calculate the flow rate. The wedge flow sensor is non-standard part, so every wedge flow meter must be calibrated with the fluid before leaving factory.<\/p>\n

\"principle\"<\/p>\n

The flow rate (Qx) calculating formula as follow:<\/strong><\/p>\n

\"formula\"<\/p>\n

Qx: Volume flow rate, (Unit: m3\/s)
\nC: Discharge coefficient
\n\u03b5\uff1aExpandable coefficient
\nm: Throttling area ratio
\nD: Pipe Inner Diameter ( Unit: m )
\n\u25b3P : Differential pressure ( Unit: Pa )
\n\u03c1\uff1aProcess density of the fluid (Unit: Kg\/m3 )<\/p>\n

<\/h5>\n
Product features:<\/strong><\/h5>\n

\u25cf Especially suitable for flow measurement of the liquid with high viscosity, low Reynolds number or the liquid with suspend substance and bubbles.
\n\u25cf The permanent pressure loss is lower than that of orifice plate.
\n\u25cf The wedge structure has the function of guiding the flow and anti blocking.
\n\u25cf Compensation to viscosity variation, temperature variation, density variation.
\n\u25cf Anti-Vibration, anti-strike, anti-smudgy.
\n\u25cf With the function of bidirectional measurement.
\n\u25cf Good repeatability, after calibration, accuracy is 1.0% ~ 1.5%.
\n\u25cf Simple structure, no movement part, wear-resisting, no need of re-calibration during long term using.
\n\u25cf Anti-corrosion metal material available for the wedge type flow sensor and using DP transmitter with remote seal.<\/p>\n

<\/h5>\n
Technical parameters:<\/strong><\/h5>\n\n\n\n\n\n\n\n\n\n\n\n
Nominal diameter<\/td>\nDN15 ~ DN300 (Special order for size above DN300)<\/td>\n<\/tr>\n
Exatid\u00e3o<\/td>\n\u00b1 (1.0 ~1.5) % FS<\/td>\n<\/tr>\n
Turn down ratio<\/td>\n15:1<\/td>\n<\/tr>\n
Press\u00e3o de funcionamento<\/td>\n-0.1 Mpa to 6.4Mpa<\/td>\n<\/tr>\n
Temperatura de funcionamento<\/td>\n-50 to 400 \u2103<\/td>\n<\/tr>\n
Measurable minimum flow rate<\/td>\n0.01 m\/s<\/td>\n<\/tr>\n
Up limit of process viscosity<\/td>\n500 mPa.s<\/td>\n<\/tr>\n
Reynolds number range<\/td>\n300 ~ 1 x 10^6<\/td>\n<\/tr>\n
Applicable fluid<\/td>\nwater, waste water, gas, steam, high viscosity liquid, Solid & liquid mixture<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Installation and using<\/strong><\/h5>\n

(1) Make sure the fluid which is close to the upstream of wedge flow sensor is fully developmental turbulent flow and no swirls.
\n(2) Make sure the average inner diameter’s error in at least 2 x DN length of pipe at the upstream of the wedge flow sensor not excess\u00b13% of the average pipeline’s inner diameter.
\n(3) The wedge flow meter can be installed on the horizontal or vertical pipeline with same nominal diameter. The pipeline’s inner wall shall be smooth and no attached substance. If the flow sensor is vertical mounting, the fluid shall flow from down to up, shall make the flow meter can exhaust the air bubbles conveniently to avoid the instrument’s zero point drifting.
\n(4) The installation diagram of the wedge flow meter as follow:<\/p>\n

\"esquema<\/p>\n

(5) The upstream and downstream of the wedge flow meter shall be configurated with straight pipe, different wedge ratio request different straight pipe length at the upstream of the wedge flow meter, please refer to the following table:<\/p>\n\n\n\n\n\n\n\n\n\n
Wedge ratio
\n( H\/D )<\/td>\n		The requested straight pipe length at the upstream of the wedge flow meter, if the upstream is respectively elbow 90\u00b0, Tee pipe, ball valve, gate valve.<\/td>\n<\/tr>\n
Elbow 90\u00b0<\/td>\nTee pipe<\/td>\nBall valve<\/td>\nGate valve
\n( Full open )<\/td>\n<\/tr>\n
0.2<\/td>\n\u2265 6D<\/td>\n\u2265 6D<\/td>\n\u2265 10D<\/td>\n\u2265 6D<\/td>\n<\/tr>\n
0.3<\/td>\n\u2265 8D<\/td>\n\u2265 8D<\/td>\n\u2265 11D<\/td>\n\u2265 6D<\/td>\n<\/tr>\n
0.4<\/td>\n\u2265 12D<\/td>\n\u2265 12D<\/td>\n\u2265 14D<\/td>\n\u2265 8D<\/td>\n<\/tr>\n
0.5<\/td>\n\u2265 14D<\/td>\n\u2265 14D<\/td>\n\u2265 16D<\/td>\n\u2265 10D<\/td>\n<\/tr>\n
Observa\u00e7\u00e3o:\u00a0 <\/strong>D is the inner diameter of the wedge flow sensor<\/span><\/a>\u00a0meter tube.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

 <\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

The throttling element of wedge flow meter is a “V” shape block, its smooth apex angle is downwards, which does not cause the liquid with suspending particles or the viscous liquid staying at the upstream of the throttling element. The wedge flow meter can measure the liquid flow rate with high viscosity. For the process of large pipe size with low flow rate, the wedge flow meter has great advantage, it is specially suitable for volume flow and mass flow measurement in the industry of petroleum and chemical.
\nHot Tags:<\/strong> Instrumento de caudal<\/a><\/span>\uff0cTransmissor de n\u00edvel<\/a><\/span>\uff0cmedidor de caudal de \u00e1gua<\/a><\/span><\/p>","protected":false},"featured_media":1314,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_cat":[75,861],"product_tag":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hginstrument.com\/pt\/wp-json\/wp\/v2\/product\/913"}],"collection":[{"href":"https:\/\/www.hginstrument.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.hginstrument.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hginstrument.com\/pt\/wp-json\/wp\/v2\/comments?post=913"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hginstrument.com\/pt\/wp-json\/wp\/v2\/media\/1314"}],"wp:attachment":[{"href":"https:\/\/www.hginstrument.com\/pt\/wp-json\/wp\/v2\/media?parent=913"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.hginstrument.com\/pt\/wp-json\/wp\/v2\/product_cat?post=913"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.hginstrument.com\/pt\/wp-json\/wp\/v2\/product_tag?post=913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}